Use std::default_delete as the default deleter for scoped_ptr.

media/video/video_encode_accelerator.cc

Index: media/video/video_encode_accelerator.cc
diff --git a/media/video/video_encode_accelerator.cc b/media/video/video_encode_accelerator.cc
index dccd31d7bc329d6a34e3858a9ef98f83a749fd65..51a4a7bb9e56a2167ca960fb35b73730af5ef303 100644
--- a/media/video/video_encode_accelerator.cc
+++ b/media/video/video_encode_accelerator.cc
@@ -19,13 +19,11 @@ VideoEncodeAccelerator::SupportedProfile::~SupportedProfile() {
 
 }  // namespace media
 
-namespace base {
+namespace std {
 
-void DefaultDeleter<media::VideoEncodeAccelerator>::operator()(
-    void* video_encode_accelerator) const {
-  static_cast<media::VideoEncodeAccelerator*>(video_encode_accelerator)->
-      Destroy();
+void default_delete<media::VideoEncodeAccelerator>::operator()(
+    media::VideoEncodeAccelerator* vea) const {
+  vea->Destroy();
 }
 
-}  // namespace base
-
+}  // namespace std